Solid silicone rubber does not look like rubber, but more like a colored rubber paste, which is called blended silicone rubber in the industry. Its birth process is not mysterious. It involves throwing raw silicone rubber into a rubber mixing machine, adding white carbon black, silicone oil, vulcanizing agent, and color paste, repeatedly refining it evenly, and producing a solid rubber material that can be used directly.

The whole process is a bit like kneading dough, except that the dough tank has been replaced with a closed kneading machine, the flour has been replaced with raw rubber and various additives, and the kneaded dough is not dough but a solid rubber compound that can be directly cut and used. After receiving it, there is no need to mix or defoam it. Cut it into a size that matches the mold and put it in. Preheat the mold to 150 to 200 degrees, then close it and send it to the press. It can be cured and formed in ten to thirty minutes under high temperature and pressure. After demolding and trimming, it is done.

The entire process can be described as cutting, hot pressing, molding, and trimming, similar to making erasers, except that the temperature is much higher. The core reason why it is increasingly chosen by factories to replace liquid silicone is that it is worry free. Liquid silicone requires precise proportioning, vacuum defoaming, and precise control of curing time. A set of equipment costs hundreds of thousands, but the yield rate is still unstable. Solid silicone can be used immediately after opening the bag, and can be dried with a regular vulcanizing machine without the need for vacuum equipment or precision dispensing, resulting in a high yield rate.

From car seals to electronic buttons, from medical catheters to aviation oxygen masks, it can be used in any place that requires high temperature resistance, aging resistance, non toxicity, and insulation. And it also has an advantage that liquid silicone cannot achieve - it can make ultra thick products, solid silicone pads that are tens of millimeters thick. Liquid silicone cannot cure evenly, but solid silicone can be pressed in, and the finished product is a whole piece with uniform elasticity.

Regarding liquid silicone rubber, please refer to our website for details: IOTA Liquid Silicone Rubber